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Numerical modelling and optimisation of natural convection heat loss suppression in a solar cavity receiver with plate fins

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  • Ngo, L.C.
  • Bello-Ochende, T.
  • Meyer, J.P.

Abstract

This study details the numerical modelling and optimization of natural convection heat suppression in a solar cavity receiver with plate fins. The use of plate fins attached to the inner aperture surface is presented as a possible low cost means of suppressing natural convection heat loss in a cavity receiver. In the first part of the study a three-dimensional numerical model that captures the heat transfer and flow processes in the cavity receiver is analyzed, and the possibilities of optimization were then established. The model is laminar in the range of Rayleigh number, inclination angle, plate height and thickness considered. In the second part of the study, the geometric parameters considered were optimized using optimization programme with search algorithm. The results indicate that significant reduction on the natural convection heat loss can be achieved from cavity receivers by using plate fins, and an optimal plate fins configuration exit for minimal natural convection heat loss for a given range of Rayleigh number. Reduction of up to a maximum of 20% at 0° receiver inclination was observed. The results obtained provide a novel approach for improving design of cavity receiver for optimal performance.

Suggested Citation

  • Ngo, L.C. & Bello-Ochende, T. & Meyer, J.P., 2015. "Numerical modelling and optimisation of natural convection heat loss suppression in a solar cavity receiver with plate fins," Renewable Energy, Elsevier, vol. 74(C), pages 95-105.
    • Handle: RePEc:eee:renene:v:74:y:2015:i:c:p:95-105
    DOI: 10.1016/j.renene.2014.07.047
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    References listed on IDEAS

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    1. Bertocchi, Rudi & Karni, Jacob & Kribus, Abraham, 2004. "Experimental evaluation of a non-isothermal high temperature solar particle receiver," Energy, Elsevier, vol. 29(5), pages 687-700.
    2. Cui, Fuqing & He, Yaling & Cheng, Zedong & Li, Yinshi, 2013. "Study on combined heat loss of a dish receiver with quartz glass cover," Applied Energy, Elsevier, vol. 112(C), pages 690-696.
    3. Bilgen, E., 2002. "Natural convection in enclosures with partial partitions," Renewable Energy, Elsevier, vol. 26(2), pages 257-270.
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    2. Kasaeian, Alibakhsh & Kouravand, Amir & Vaziri Rad, Mohammad Amin & Maniee, Siavash & Pourfayaz, Fathollah, 2021. "Cavity receivers in solar dish collectors: A geometric overview," Renewable Energy, Elsevier, vol. 169(C), pages 53-79.
    3. Karimi, Reza & Gheinani, Touraj Tavakoli & Madadi Avargani, Vahid, 2018. "A detailed mathematical model for thermal performance analysis of a cylindrical cavity receiver in a solar parabolic dish collector system," Renewable Energy, Elsevier, vol. 125(C), pages 768-782.
    4. Daabo, Ahmed M. & Mahmoud, Saad & Al-Dadah, Raya K. & Ahmad, Abdalqader, 2017. "Numerical investigation of pitch value on thermal performance of solar receiver for solar powered Brayton cycle application," Energy, Elsevier, vol. 119(C), pages 523-539.
    5. Zhang, Li & Fang, Jiabin & Wei, Jinjia & Yang, Guidong, 2017. "Numerical investigation on the thermal performance of molten salt cavity receivers with different structures," Applied Energy, Elsevier, vol. 204(C), pages 966-978.
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    7. Li, Xueling & Li, Renfu & Chang, Huawei & Zeng, Lijian & Xi, Zhaojun & Li, Yichao, 2022. "Numerical simulation of a cavity receiver enhanced with transparent aerogel for parabolic dish solar power generation," Energy, Elsevier, vol. 246(C).

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